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 Physics Letters B 488 (2000) 234-246
 Search for a Scalar Top almost degenerate with the lightest Neutralino in $e^+ e^-$ collisions at $\sqrt{s}$ up to 202 GeV
 ALEPH Collaboration(s)
 (2000)
 Data collected at centre-of-mass energies from 189 GeV to 202 GeV by the ALEPH detector at LEP, corresponding to an integrated luminosity of 411 pb-1, are analysed in a search for the scalar top in the decay channels 'stop -> c/u neutralino' for small mass differences between the stop and the lightest neutralino. No evidence for deviations from the Standard Model expectation is found and a lower limit of 59 GeV/c**2 is set for the stop mass, independent of the stop to neutralino mass difference and of the stop lifetime.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
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 in2p3-00005671, version 1 http://hal.in2p3.fr/in2p3-00005671 oai:hal.in2p3.fr:in2p3-00005671 Contributeur : Magali Damoiseaux <> Soumis le : Vendredi 15 Septembre 2000, 13:53:45 Dernière modification le : Vendredi 15 Septembre 2000, 13:53:45